<template>
  <view>
    <!-- <my-search :bgcolor="'pink'" :radius="3"></my-search> -->
    <my-search @click="gotoSearch"></my-search>
    <view class="scroll-view-container">
      <!-- 左侧滑动区 -->
      <scroll-view scroll-y="true" class="left-scroll-view" :style="{height: wh + 'px'}">
      <block v-for="(item,i) in cateList" :key="i">
        <view :class="['left-scroll-view-item',i === active ? 'active' : '']" @click="activeChanged(i)">{{item.cat_name}}</view>
      </block>
      <!-- 右侧滑动区域 -->
      </scroll-view><scroll-view scroll-y="true" :style="{height: wh + 'px'}" :scroll-top="scrollTop">
       <view class="cate-lv2" v-for="(item2,i2) in cateLevel2" :key="i2">
         <!-- //二级分类标题 -->
         <view class="cate-lv2-title">
          / {{item2.cat_name}} /
         </view>
         <!-- 三级分类列表 -->
         <view class="cate-lv3-list">
           <view class="cate-lv3-item" v-for="(item3,i3) in item2.children" :key="i3" @click="gotoGoodsList(item3)">
             <!-- 三级分类图片 -->
             <image :src="item3.cat_icon.replace('dev','web')"></image>
             <!-- 三级分类文本 -->
             <text>{{item3.cat_name}}</text>
           </view>
         </view>
       </view> 
      </scroll-view>
    </view>
  </view>
</template>

<script>
import badgeMix from "@/mixins/tabbar-badge.js"
  export default {
    mixins:[badgeMix],
    data() {
      return {
        //当前设备可用的高度
        wh:0,
        cateList:[],
        active:0,
        cateLevel2:[],
        scrollTop:0
      };
    },
    onLoad() {
      const sysInfo = uni.getSystemInfoSync()
      this.wh = sysInfo.windowHeight - 50
      this.getCateList()
    },
    methods:{
     async getCateList() {
       const {data:res} = await uni.$http.get('/api/public/v1/categories')
       if(res.meta.status !== 200) return uni.$showMsg()
       this.cateList = res.message
       //为二级分类赋值
       this.cateLevel2 = res.message[0].children
      },
      activeChanged(i) {
        this.active = i
        this.cateLevel2 = this.cateList[i].children
        this.scrollTop = this.scrollTop === 0 ? 1 : 0
      },
      gotoGoodsList(item){
        uni.navigateTo({
          url:'/subpkg/goods_list/goods_list?cid=' + item.cat_id
        })
      },
      gotoSearch() {
        console.log('ok')
        uni.navigateTo({
          url:'/subpkg/search/search'
        })
      }
    }
  }
</script>

<style lang="scss">
.scroll-view-container{
  display: flex;
  .left-scroll-view{
    width: 120px;
    .left-scroll-view-item {
      background-color: #F7F7F7;
      line-height: 60px;
      text-align: center;
      font-size: 12px;
      
      &.active {
        background-color: #FFFFFF;
        position: relative;
        
        &::before{
          content: '';
          display: block;
          width: 3px;
          height: 30px;
          background-color: #C00000;
          position: absolute;
          top: 50%;
          left: 0;
          transform: translateY(-50%);
        }
      }  
    }  
  }
  .cate-lv2-title {
    font-size: 12px;
    font-weight: bold;
    text-align: center;
    padding: 15px 0;
  }
  .cate-lv3-list {
    display: flex;
    flex-wrap: wrap;
    
    .cate-lv3-item {
      width: 33.33%;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      margin-bottom: 10px;
      
      image {
        width: 60px;
        height: 60px;
      }
      text {
        font-size: 12px;
      }
    }
  }
  
}
</style>
